{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["RNA", "cell line", "protein", "DNA", "cell type"], "input": "In PHA -activated PBL , no age-related differences were observed in c-fos or jun B mRNA expression ."}
{"RNA": [], "cell line": ["PHA -activated PBL"], "protein": ["PHA"], "DNA": [], "cell type": []}